I'm closing this out per your comment. Thanks for taking the time to submit this bug report, and following through with the information you've provided.
** Changed in: ubiquity (Ubuntu) Status: Needs Info => Rejected -- Install fails when installing in logical partitions https://launchpad.net/bugs/49041 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs